Tumblr, the social-networking website that had long eschewed advertising, has started letting users pay to promote their blog posts, the New York-based company said. The service puts paid blog posts at the top of Tumblr home pages of users...
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Photograph by Jennifer S. Altman/Bloomberg
David Karp, co-founder of Tumblr, speaks at a TechCrunch conference in New York last month.
Tumblr Begins Selling Bloggers Service to Promote Their Posts
